Explanation:
speciation by geographic isolation
Spontaneous changes within the genome may arise during the process of cell division, called mutations. These are errors when copies of the DNA are made within the cell; mutations can range from small changes called single nucleotide polymorphisms to large-scale deletions and multi-gene additions.
These mutations form variants which, within a population, become stable, resulting in the formation of separate, genetically distinct populations called species. New species emerge through several volutionary mechanisms such as allopatric speciation -physical barriers to gene flow; separation of groups that develop independently in their environments by acquiring suitable characteristics
Learn more about mutations at brainly.com/question/4602376
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